Aggiornamento Repository Istituzionale e dismissione di PORTO.

A comparative study of uncertainty propagation methods in structural problems

Il contenuto (Full text) non è disponibile all'interno di questo archivio. Spedisci una richiesta all'autore per una copia del documento
Tipo di pubblicazione: Capitolo di libro
Tipologia MIUR: Contributo in Volume > Contributo in volume( Capitolo o Saggio)
Titolo: A comparative study of uncertainty propagation methods in structural problems
Autori: Corradi M.; Gherlone M.; Mattone M.; Di Sciuva M.
Autori di ateneo:
Titolo del libro: Computational Methods in Stochastic Dynamics / Papadrakakis M., Stefanou G., Papadopoulos V.
Intervallo pagine: pp. 87-111
ISBN: 9789400751347
Abstract: Several uncertainty propagation algorithms are available in literature: (i) MonteCarlo simulations based on response surfaces, (ii) approximate uncertainty propagation algorithms, and (iii) non probabilistic algorithms. All of these approaches are based on some a priori assumptions about the nature of design variables uncertainty and on the models and systems behavior. Some of these as-sumptions could misrepresent the original problem and, consequently, could yield to erroneous design solutions, in particular where the prior information is poor or inexistent (complete ignorance). Therefore, when selecting a method to solve an uncertainty based design problem, several aspects should be considered: prior as-sumptions, non-linearity of the performance function, number of input random variables and required accuracy. It could be useful to develop some guidelines to choose an appropriate method for a specific situation. In the present work some classical structural problems will be studied in order to investigate which probabilistic approach, in terms of accuracy and computational cost, better propagates the uncertainty from input to output data. The methods un-der analysis will be: Univariate Dimension Reduction methods, Polynomial Chaos Expansion, First-Order Second Moment method, and algorithms based on the Evi-dence Theory for epistemic uncertainty. The performances of these methods will be compared in terms of moment estimations and probability density function construction corresponding to several scenarios of reliability based design and ro-bust design. The structural problems presented will be: (1) the static, dynamic and buckling behavior of a composite plate, (2) the reconstruction of the deformed shape of a structure from measured surface strains
Data: 2013
Status: Pubblicato
Lingua della pubblicazione: Inglese
Parole chiave:
Dipartimenti (originale): DIMEAS - Dipartimento di Ingegneria Meccanica e Aerospaziale
DIASP - Ingegneria Aeronautica e Spaziale
Dipartimenti: DIMEAS - Dipartimento di Ingegneria Meccanica e Aerospaziale
URL correlate:
Area disciplinare: Area 09 - Ingegneria industriale e dell'informazione > COSTRUZIONI E STRUTTURE AEROSPAZIALI
Data di deposito: 02 Lug 2012 21:22
Data ultima modifica (IRIS): 04 Set 2015 15:50:24
Data inserimento (PORTO): 09 Ott 2015 10:06
Numero Identificativo (DOI): 10.1007/978-94-007-5134-7_6

Azioni (richiesto il login)

Visualizza il documento (riservato amministratori) Visualizza il documento (riservato amministratori)